CVE-2026-32135

HIGH

NanoMQ has Heap Buffer Overflow in URI Parameter Parsing

Title source: cna
STIX 2.1

Description

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Versions prior to 0.24.11 have a remotely triggerable heap buffer overflow in the `uri_param_parse` function of NanoMQ's REST API. The vulnerability occurs due to an off-by-one error when allocating memory for query parameter keys and values, allowing an attacker to write a null byte beyond the allocated buffer. This can be triggered via a crafted HTTP request. Version 0.24.11 patches the issue.

References (3)

Core 3

Scores

CVSS v3 7.5
EPSS 0.0050
EPSS Percentile 38.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-122
Status published
Products (2)
emqx/nanomq < 0.24.11
nanomq/nanomq < 0.24.11
Published Apr 20, 2026
Tracked Since Apr 21, 2026